Searching for Variable Stars in the Open Cluster NGC 2355 and Its Surrounding Region
arXiv:2206.06569 · doi:10.3847/1538-3881/ac755a
Abstract
We have investigated the variable stars in the field surrounding NGC 2355 based on the time-series photometric observation data. More than 3000 CCD frames were obtained in the V band spread over 13 nights with the Nanshan One-meter Wide-field Telescope. We have detected 88 variable stars, containing 72 new variable stars and 16 known variable stars. By analyzing these light curves, we classified the variable stars as follows: 26 eclipsing binaries, 52 pulsating stars, 4 rotating variables, and 6 unclear type variable stars for which their periods are much longer than the time baseline chosen. Employing Gaia DR2 parallax, kinematics, and photometry, the cluster membership of these variable stars were also analyzed for NGC 2355. In addition to the 11 variable members reported by Cantat-Gaudin et al. (2018), we identify 4 more variable member candidates located at the outer region of NGC 2355 and showed homogeneity in space positions and kinematic properties with the cluster members. The main physical parameters of NGC 2355 estimated from the two-color and color-magnitude diagrams are log(age/yr) = 8.9, E(B - V) = 0.24 mag, and [Fe/H] = - 0.07 dex.
arXiv comment15 pages, 11 figures. 6 tables,Accepted for publication in AJ
References in corpus (33)
- Astropy: A Community Python Package for Astronomy
- Gaia Data Release 2. Summary of the contents and survey properties
- PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
- Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
- Gaia Data Release 2: The astrometric solution
- The First Data Release (DR1) of the LAMOST general survey
- Gaia Data Release 2: Photometric content and validation
- A Gaia DR2 view of the Open Cluster population in the Milky Way
- Correcting systematic effects in a large set of photometric lightcurves
- The ASAS-SN Catalog of Variable Stars I: The Serendipitous Survey
- The Kepler characterization of the variability among A- and F-type stars. I. General overview
- The Zwicky Transient Facility Catalog of Periodic Variable Stars
- Periodograms for Multiband Astronomical Time Series
- Revisiting the population of Galactic open clusters
- On the Galactic Disk Metallicity Distribution from Open Clusters I. New Catalogues and Abundance Gradient
- Probing the Outer Galactic halo with RR Lyrae from the Catalina Surveys
- A catalog of newly identified star clusters in GAIA DR2
- A fast hybrid algorithm for exoplanetary transit searches
- UPMASK: unsupervised photometric membership assignment in stellar clusters
- Structural parameters of 389 local Open Clusters
- A Chemical Abundance Study of 10 Open Clusters Based on WIYN-Hydra Spectroscopy
- Wide-field Infrared Survey Explorer (WISE) Catalog of Periodic Variable Stars
- The SARS algorithm: detrending CoRoT light curves with Sysrem using simultaneous external parameters
- Mapping the outer bulge with RRab stars from the VVV Survey
- Radial pulsation as a function of hydrogen abundance
- The Wide-field Photometric System of the Nanshan One-meter Telescope
- Fitting isochrones to open cluster photometric data III. Estimating metallicities from UBV photometry
- Photometric and spectroscopic study of the intermediate-age open cluster NGC 2355
- Variable Stars in the Open Cluster NGC 7142
- Molecular Clump Extraction Algorithm Based on Local Density Clustering
- A study of variable stars in the open cluster NGC 1582 and its surrounding field
- Variable stars in the field of intermediate-age open cluster NGC 559
- Investigating Variable Stars in the Open Cluster NGC 1912 and Its Surrounding Field